Home / 2,088.20-3,130.24-918.83

Finding the Fourth Proportional to 2,088.20, 3,130.24 and 918.83

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Solution

The fourth proportional to 2,088.20, 3,130.24 and 918.83 is: 1,377.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,088.20 : 3,130.24 = 918.83 : x
  2. Step 2: Convert to fraction form
    2,088.20/3,130.24 = 918.83/x
  3. Step 3: Cross multiply
    2,088.20x = 3,130.24 × 918.83
  4. Step 4: Simplify right side
    2,088.20x = 2,876,158.42
  5. Step 5: Solve for x
    x = 2,876,158.42/2,088.20
  6. Step 6: Final answer
    x = 1,377.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.